Indonesia is located at the equator line with its tropical climate which allows many species of plants to grow lushly. One of these species of plants is cassava which can be found from the west to the east of Indonesia. Cassava can produce amylum which can be turned into glucose through hydrolysis process. This research aims at figuring out the comparison of reaction times, i.e.: 12, 24, 36, 48, and 60 hours, comparison of substrate concentration, i.e.: 20:120, 20:140, 20:160, 20:180, and 20:200 gr/ml and comparison of yeast content: 5%, 10%, 15%, 20%, and 25%. The hydrolysis is performed by mixing the cassava starch pulp at 20 grams and yeast at 11.6 grams. Later, it is fermented for variable times. After obtaining the optimal hydrolysis time, i.e. 12 hours, a hydrolysis is done at variable substrate concentrations for 12 hours and an optimum sugar level is obtained at 20:120 gr/ml ratio. It is then hydrolyzed for 12 hours at substrate concentration 20:120 gr/ml ratio, hence the optimum reduction sugar level is obtained when the yeast content is 10% of the tapioca flour pulp weight.

This study aims to analyze the readiness and sustainability of learning systems with e-learning in Indonesia. The data technique is carried out by studying literature by searching national and international research journals related to online learning, policies and regulations related to online learning, and conditions that occur in the field through the official website. Analysis using Milles and Hubermen which includes data reduction, data presentation and conclusions. The results show that Indonesia is not ready for online learning because of some internet network conditions that are not available in some areas, parents as learning companions from home do not have the skills that match or coincide with working hours, not all parents have economic capacity in providing facilities and targets for online learning, and the ability or skills of educators to use technology and information in online learning. The conclusion in this study is that online learning in Indonesia does not yet have complete readiness. Since "Learning from Home" was rolled out to date, there are still a lot of schools going on, especially internet networks and skills in the use of communication and information technology to support online learning. Online learning can be evaluated continuously to support the sustainability of education in Indonesia.